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Db2
Firebird
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Node.js
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Developer-C 11.1
3.0
4.0
10.2
10.3
10.4
10.5
10.6
10.7
10.8
10.9
5.5
5.6
5.7
8.0
18
11g Release 2
18c
21c
23c
8.4
9.3
9.4
9.5
9.6
10
11
12
13
14
15
16
3.8
3.16
3.27
3.39
2012
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2022
2.11
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Sakila
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AdventureWorks
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AdventureWorks
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CREATE TABLE dbo.tbl_A(ID INT, Val varchar(255)); INSERT INTO dbo.tbl_A(id,val) VALUES(1,'bla'),(1,'bla'),(2,'bla'),(2,'ugh'),(3,'bla'); IF (EXISTS (SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = 'dbo' AND TABLE_NAME = 'tbl_B')) BEGIN TRUNCATE TABLE dbo.tbl_B INSERT INTO dbo.tbl_B SELECT * FROM dbo.tbl_A; END ELSE BEGIN SELECT * INTO dbo.tbl_B FROM dbo.tbl_A GROUP BY ID,VAL; END IF (EXISTS (SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = 'dbo' AND TABLE_NAME = 'tbl_B')) BEGIN TRUNCATE TABLE dbo.tbl_B INSERT INTO dbo.tbl_B SELECT DISTINCT * FROM dbo.tbl_A; END ELSE BEGIN SELECT DISTINCT * INTO dbo.tbl_B FROM dbo.tbl_A; END SELECT * FROM dbo.tbl_B;
ID
Val
1
bla
2
bla
2
ugh
3
bla